In simple terms, 'Chromism' means 'color change' and the materials that show color change are known as Chromic Materials. The phenomena of color change is known as Chromism. Such color change in materials can be brought as a result of some external stimuli such as an electric field, temperature, pressure, solvent, light, humidity, vapor etc. Accordingly, the phenomena is known as Electrochromism (color change due to application of electric field), Thermochromism (color change due to change in temperature), Piezochromism (due to pressure), Solvatochromism (due to solvent), Photochromism (due to light), Humidochromism (due to humidity), Vapochromism (due to vapors or gas), Bio-chromism and so on.

A variety of materials such as dyes and pigments, conjugated conducting polymers, oxides, organic molecules etc show chromic phenomena. There are multiple applications of such Chromic Materials. Some of the applications are already developed to the technological level and are commercialized successfully whereas some are in the developmental stage. Let me give the most common example that almost all of us know i.e. Sun-glasses. Sun-glasses usually are transparent in the shadow and becomes opaque / colored in presence of sunlight, thus protecting our eyes from intense sunlight. Sun-glasses use Photo-chromic materials that change color due to application of light. Other examples of successful realistic application of chromic materials include Sensors, Photo-chromic windows, Smart Windows (a device combination of Solar Cell and Electrochromic Windows), Electrochromic Displays, Molecular Switches, Memories and so on.

Via this book, it is thought to consolidate all important information and know-how available on chromic materials, phenomena and their technological applications. This book is expected to serve as an important guide and information source for beginners / new-comers to this field (such as students and young researchers) as well as to Researchers, Scientists, Professors by providing them information about the current state-of-the-art in this field. Book will be divided into different sections, each related to particular type of Chromism. Each book chapter / article is written by an expert in that field. All kinds of chromic phenomena, different chromic materials, origin of chromic phenomena, current state-of-the-art technology, applications, Future prospects, theoretical studies will be deal with in this book.

It is a cutting-edge interdisciplinary book specifically focused on chromic materials, phenomena, technological applications of chromic materials and related aspects. This book can be used as a Text book as well as a Reference book. This book is a valuable source for scientists, graduate students, researchers, and other professionals working in the field of chromic materials and their technological aplications, nanotechnology, materials science, chemistry and electrochemistry, engineering, polymer science, physics, and spectroscopy.

1) An introduction to Chromism.

2) Electrochromic Materials and Devices

3) Electrochromism in Conducting Polymers

4) Electrochromic windows for energy saving applications in buildings : material development and large scale device fabrication.

5) Implimentation of electrochromic windows in buildings : evaluation of their energy savings and environmental impact.

6) Nanochromics : Nanostructures and Architectures for high performance electrochromic devices.

7) Optimization of the thermal-treatment of chemically prepared electrochromic nickel oxide thin films, their electrochromic properties and structural investigations.

8) Thermochromic metal oxides.

9) Metal to Insulator transitions and the thermochromism of VO2 at the nanoscale.

10) What matters in fabricating thermochromic glazing films (?).

11) Advanced thermochromic plastics for optical temperature sensing

12) Microwave power absorption studies in thermochromic manganites

13) Unconventional Photochromic Polymers.

14) Photochromism in transition metal oxides induced by photoinjection of hydrogen.

15) Methodology of measurement of Photochromic materials.

16) Chromogenic materials based on 2-phenyl-1-benzopyrylium : From Anthocyanins to synthetic Flavylium compounds

17) Application of solvatochromism for determination of dipole moments of molecules in electronic excited S1 state.

18) Application of conducting polymers in optical biosensors for detection of analytes related to the renal diseases

19) BODIPY Laser dyes applied in sensing and monitoring environmental properties